High-efficiency gas/liquid contacting
With Mott porous metal spargers

Engineered solutions from porous metal are created routinely by Mott’s Specialized Sparging Team. This team can guide your selection of media type, media grade, and configuration, as well as provide design assistance and turnkey solutions. Rather than providing a harsh entrance of large bubbles from drilled pipe and other competitive devices, porous metal provides a gentle and more efficient introduction of the gas through the propagation of millions of fine bubbles. This results in greater gas/liquid contact area and highly efficient mass transfer of the gas into the liquid. Process time and gas volume are reduced saving both time and money.

Some specific sparging applications include N₂ injection into emulsifiers and oils to remove O₂, batch hydrogenation applications, gas introduction and mixing in fermentation applications, and carbonation of beverages.

In food processing, Mott spargers are used in a wide variety of gas/liquid and gas/emulsion applications including aeration, bulking, carbonation, fermentation, hydrogenation, steam injection, oxygen stripping and pH control.

Food processing applications
Porous metal components are being used in an ever-growing variety of food industry applications. It is used in food bulking and debulking, filtration, aeration, floatation, venting and steam injection. It has also been used to create dimensional vacuum molds to create specific ‘shapes’ from slurries and batters such as cookie, candy, chicken and fish. Mott’s porous metal diffusers have been used in snack food packaging operations by gently blowing open bags with nitrogen, preparing them for filling and at the same time displacing the air, which helps to extend product shelf life. Porous metal is also used in filtration systems used in oil hydrogenation to recover expensive catalysts (virtually 100%) with a minimum of product loss.

Mott’s porous metal media has the distinct advantages of uniform and high-precision porosity, strength and durability, resistance to corrosion, tolerance of high temperatures and pressures, and cleanability. Those are the reasons Plant Engineers and Process Development Managers are looking to Mott to help change dated processing operations into more efficient and productive production.

Typical applications
Mott spargers are designed for two specific types of processes, static and dynamic. Static applications involve batch processes, or where liquids are stored in tanks.  Dynamic sparging is designed for continuous processes in pipelines or channels. Mott has many years of experience to accommodate both application designs.

Oxygen stripping, using nitrogen. Actual performance data shows the superiority of Mott porous metal spargers compared to drilled pipe spargers. Much higher performance levels with significantly lower gas consumption.

Spargers made with Mott porous media are of rugged construction and provide reliability in service. Mechanical shock or thermal cycling has little effect on porous metal, whereas ceramic or fritted glass elements can fail due to brittleness. Porous metal can be fabricated in many different configurations and sizes to meet specific application requirements.

Configured for any application
Mott sparging products can be configured into any number of shapes and sizes including cups, discs, and tubular elements manufactured through a sintered powdered metal process that strictly controls uniformity and distribution of pores. Mott also has the capability of incorporating hardware based on the specific application for a perfect fit, easy installation, and easy replacement. Passivation of the parts is also available upon request.

Mott offers a variety of porous metal alloys. Typically 316L stainless steel is used, but for high temperature or high corrosion applications, alloys such as Hastelloy® C-22 may be more appropriate. Specific properties and conditions are taken into account in the design and manufacture of spargers. Flow rate, process temperature, system pressure, and corrosive effects are just a few.

Proven experience
Mott Corporation has been dedicated to the development, application and refinement of porous metal media since 1959. The Company’s design teams are continually engineering porous metal components, sub-assemblies and finished products for applications in a wide variety of industries, including food and beverage, medical, pharmaceutical, biotech, photovoltaic, chemical, petrochemical, instrumentation, semiconductor, energy and fuel cells. And, no other media offers the level of integrity necessary for repeated cleaning and re-use that porous metal provides.

For more information
Click on the images below to download our 8-page sparger brochure or our 11-page sparger design guide. You can also download our single-page Sparging Application Data Sheet for use in submitting your application details for consideration.

For more information, contact our sales department at Mott Corporation, 84 Spring Lane, Farmington, CT 06032, 1-860-747-6333 or Toll-Free 1-800-BUY-MOTT. E-mail: quest@mottcorp.com.